Train Source Priority Does Nothing

[morsk]

update: This was caused by me creating new 0/1 stations with cut-and-paste, which apparently short-circuits the system.

If I take a 0/0 station and change it to 0/1 after it's built, the priority system works.

I may report this as a bug once I know more about it, in case a developer agrees it's a bug. But first I will experiment more.

Original Post

FFF #395 claims I can choose a train's source with priority, not only choose its destination. None of it works. The lowest "Train ID" is always chosen for dispatch. Source priority does nothing.

When trains are trying to leave a stop, trains at stops with higher priority are dispatched first.

Does not work.

Additionally, there are some special cases where trains are given the absolute max priority of 255:

When the player manually tells the train to go somewhere.

Not working on manually triggered interrupts. I don't know if it ever works.

When a train has 'no path' or 'destination full' in the middle of the tracks (i.e. not waiting at a train stop).

Simply does not work. I deleted the train stop, manually moved the train back and forth so there was no way it believed it was at a train stop anymore, then put it on automatic, and watched it No-Path. It still wasn't chosen.

I am testing this in a creative map, and intend to use it to decommission half-unloaded trains in old builds, once I have any way of doing it. This is the use case mentioned in the FFF, "decommissioning old stations". But not a single way of getting source priority has worked. It always goes by Train ID.

Was the feature scrapped? Has anyone used it successfully?